diff --git a/examples/erc20-flash-mint/src/ERC3156FlashBorrowerMock.sol b/examples/erc20-flash-mint/src/ERC3156FlashBorrowerMock.sol
deleted file mode 100644
index e04d98243..000000000
--- a/examples/erc20-flash-mint/src/ERC3156FlashBorrowerMock.sol
+++ /dev/null
@@ -1,58 +0,0 @@
-// SPDX-License-Identifier: MIT
-pragma solidity ^0.8.24;
-
-import "../../solidity-contracts/contracts/interfaces/IERC3156FlashBorrower.sol";
-import "../../solidity-contracts/contracts/token/ERC20/IERC20.sol";
-import "../../solidity-contracts/contracts/utils/Address.sol";
-
-/**
- * @dev WARNING: this IERC3156FlashBorrower mock implementation is for testing purposes ONLY.
- * Writing a secure flash lock borrower is not an easy task, and should be done with the utmost care.
- * This is not an example of how it should be done, and no pattern present in this mock should be considered secure.
- * Following best practices, always have your contract properly audited before using them to manipulate important funds on
- * live networks.
- */
-contract ERC3156FlashBorrowerMock is IERC3156FlashBorrower {
-    bytes32 internal constant _RETURN_VALUE =
-        keccak256("ERC3156FlashBorrower.onFlashLoan");
-
-    bool _enableApprove;
-    bool _enableReturn;
-
-    event BalanceOf(address token, address account, uint256 value);
-    event TotalSupply(address token, uint256 value);
-
-    constructor(bool enableReturn, bool enableApprove) {
-        _enableApprove = enableApprove;
-        _enableReturn = enableReturn;
-    }
-
-    function onFlashLoan(
-        address /* initiator */,
-        address token,
-        uint256 amount,
-        uint256 fee,
-        bytes calldata data
-    ) public returns (bytes32) {
-        require(msg.sender == token, "Invalid token address");
-
-        emit BalanceOf(
-            token,
-            address(this),
-            IERC20(token).balanceOf(address(this))
-        );
-
-        emit TotalSupply(token, IERC20(token).totalSupply());
-
-        if (data.length > 0) {
-            // WARNING: This code is for testing purposes only! Do not use in production.
-            Address.functionCall(token, data);
-        }
-
-        if (_enableApprove) {
-            IERC20(token).approve(token, amount + fee);
-        }
-
-        return _enableReturn ? _RETURN_VALUE : bytes32(0);
-    }
-}
diff --git a/examples/solidity-contracts/contracts/interfaces/IERC3156FlashBorrower.sol b/examples/solidity-contracts/contracts/interfaces/IERC3156FlashBorrower.sol
deleted file mode 100644
index daafb17ee..000000000
--- a/examples/solidity-contracts/contracts/interfaces/IERC3156FlashBorrower.sol
+++ /dev/null
@@ -1,27 +0,0 @@
-// SPDX-License-Identifier: MIT
-// OpenZeppelin Contracts (last updated v5.1.0) (interfaces/IERC3156FlashBorrower.sol)
-
-pragma solidity ^0.8.20;
-
-/**
- * @dev Interface of the ERC-3156 FlashBorrower, as defined in
- * https://eips.ethereum.org/EIPS/eip-3156[ERC-3156].
- */
-interface IERC3156FlashBorrower {
-    /**
-     * @dev Receive a flash loan.
-     * @param initiator The initiator of the loan.
-     * @param token The loan currency.
-     * @param amount The amount of tokens lent.
-     * @param fee The additional amount of tokens to repay.
-     * @param data Arbitrary data structure, intended to contain user-defined parameters.
-     * @return The keccak256 hash of "ERC3156FlashBorrower.onFlashLoan"
-     */
-    function onFlashLoan(
-        address initiator,
-        address token,
-        uint256 amount,
-        uint256 fee,
-        bytes calldata data
-    ) external returns (bytes32);
-}
diff --git a/examples/solidity-contracts/contracts/token/ERC20/IERC20.sol b/examples/solidity-contracts/contracts/token/ERC20/IERC20.sol
deleted file mode 100644
index 7d1019563..000000000
--- a/examples/solidity-contracts/contracts/token/ERC20/IERC20.sol
+++ /dev/null
@@ -1,79 +0,0 @@
-// SPDX-License-Identifier: MIT
-// OpenZeppelin Contracts (last updated v5.1.0) (token/ERC20/IERC20.sol)
-
-pragma solidity ^0.8.20;
-
-/**
- * @dev Interface of the ERC-20 standard as defined in the ERC.
- */
-interface IERC20 {
-    /**
-     * @dev Emitted when `value` tokens are moved from one account (`from`) to
-     * another (`to`).
-     *
-     * Note that `value` may be zero.
-     */
-    event Transfer(address indexed from, address indexed to, uint256 value);
-
-    /**
-     * @dev Emitted when the allowance of a `spender` for an `owner` is set by
-     * a call to {approve}. `value` is the new allowance.
-     */
-    event Approval(address indexed owner, address indexed spender, uint256 value);
-
-    /**
-     * @dev Returns the value of tokens in existence.
-     */
-    function totalSupply() external view returns (uint256);
-
-    /**
-     * @dev Returns the value of tokens owned by `account`.
-     */
-    function balanceOf(address account) external view returns (uint256);
-
-    /**
-     * @dev Moves a `value` amount of tokens from the caller's account to `to`.
-     *
-     * Returns a boolean value indicating whether the operation succeeded.
-     *
-     * Emits a {Transfer} event.
-     */
-    function transfer(address to, uint256 value) external returns (bool);
-
-    /**
-     * @dev Returns the remaining number of tokens that `spender` will be
-     * allowed to spend on behalf of `owner` through {transferFrom}. This is
-     * zero by default.
-     *
-     * This value changes when {approve} or {transferFrom} are called.
-     */
-    function allowance(address owner, address spender) external view returns (uint256);
-
-    /**
-     * @dev Sets a `value` amount of tokens as the allowance of `spender` over the
-     * caller's tokens.
-     *
-     * Returns a boolean value indicating whether the operation succeeded.
-     *
-     * IMPORTANT: Beware that changing an allowance with this method brings the risk
-     * that someone may use both the old and the new allowance by unfortunate
-     * transaction ordering. One possible solution to mitigate this race
-     * condition is to first reduce the spender's allowance to 0 and set the
-     * desired value afterwards:
-     * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
-     *
-     * Emits an {Approval} event.
-     */
-    function approve(address spender, uint256 value) external returns (bool);
-
-    /**
-     * @dev Moves a `value` amount of tokens from `from` to `to` using the
-     * allowance mechanism. `value` is then deducted from the caller's
-     * allowance.
-     *
-     * Returns a boolean value indicating whether the operation succeeded.
-     *
-     * Emits a {Transfer} event.
-     */
-    function transferFrom(address from, address to, uint256 value) external returns (bool);
-}
diff --git a/examples/solidity-contracts/contracts/utils/Address.sol b/examples/solidity-contracts/contracts/utils/Address.sol
deleted file mode 100644
index a1c8af296..000000000
--- a/examples/solidity-contracts/contracts/utils/Address.sol
+++ /dev/null
@@ -1,150 +0,0 @@
-// SPDX-License-Identifier: MIT
-// OpenZeppelin Contracts (last updated v5.1.0) (utils/Address.sol)
-
-pragma solidity ^0.8.20;
-
-import {Errors} from "./Errors.sol";
-
-/**
- * @dev Collection of functions related to the address type
- */
-library Address {
-    /**
-     * @dev There's no code at `target` (it is not a contract).
-     */
-    error AddressEmptyCode(address target);
-
-    /**
-     * @dev Replacement for Solidity's `transfer`: sends `amount` wei to
-     * `recipient`, forwarding all available gas and reverting on errors.
-     *
-     * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
-     * of certain opcodes, possibly making contracts go over the 2300 gas limit
-     * imposed by `transfer`, making them unable to receive funds via
-     * `transfer`. {sendValue} removes this limitation.
-     *
-     * https://consensys.net/diligence/blog/2019/09/stop-using-soliditys-transfer-now/[Learn more].
-     *
-     * IMPORTANT: because control is transferred to `recipient`, care must be
-     * taken to not create reentrancy vulnerabilities. Consider using
-     * {ReentrancyGuard} or the
-     * https://solidity.readthedocs.io/en/v0.8.20/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
-     */
-    function sendValue(address payable recipient, uint256 amount) internal {
-        if (address(this).balance < amount) {
-            revert Errors.InsufficientBalance(address(this).balance, amount);
-        }
-
-        (bool success, ) = recipient.call{value: amount}("");
-        if (!success) {
-            revert Errors.FailedCall();
-        }
-    }
-
-    /**
-     * @dev Performs a Solidity function call using a low level `call`. A
-     * plain `call` is an unsafe replacement for a function call: use this
-     * function instead.
-     *
-     * If `target` reverts with a revert reason or custom error, it is bubbled
-     * up by this function (like regular Solidity function calls). However, if
-     * the call reverted with no returned reason, this function reverts with a
-     * {Errors.FailedCall} error.
-     *
-     * Returns the raw returned data. To convert to the expected return value,
-     * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
-     *
-     * Requirements:
-     *
-     * - `target` must be a contract.
-     * - calling `target` with `data` must not revert.
-     */
-    function functionCall(address target, bytes memory data) internal returns (bytes memory) {
-        return functionCallWithValue(target, data, 0);
-    }
-
-    /**
-     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
-     * but also transferring `value` wei to `target`.
-     *
-     * Requirements:
-     *
-     * - the calling contract must have an ETH balance of at least `value`.
-     * - the called Solidity function must be `payable`.
-     */
-    function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {
-        if (address(this).balance < value) {
-            revert Errors.InsufficientBalance(address(this).balance, value);
-        }
-        (bool success, bytes memory returndata) = target.call{value: value}(data);
-        return verifyCallResultFromTarget(target, success, returndata);
-    }
-
-    /**
-     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
-     * but performing a static call.
-     */
-    function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
-        (bool success, bytes memory returndata) = target.staticcall(data);
-        return verifyCallResultFromTarget(target, success, returndata);
-    }
-
-    /**
-     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
-     * but performing a delegate call.
-     */
-    function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
-        (bool success, bytes memory returndata) = target.delegatecall(data);
-        return verifyCallResultFromTarget(target, success, returndata);
-    }
-
-    /**
-     * @dev Tool to verify that a low level call to smart-contract was successful, and reverts if the target
-     * was not a contract or bubbling up the revert reason (falling back to {Errors.FailedCall}) in case
-     * of an unsuccessful call.
-     */
-    function verifyCallResultFromTarget(
-        address target,
-        bool success,
-        bytes memory returndata
-    ) internal view returns (bytes memory) {
-        if (!success) {
-            _revert(returndata);
-        } else {
-            // only check if target is a contract if the call was successful and the return data is empty
-            // otherwise we already know that it was a contract
-            if (returndata.length == 0 && target.code.length == 0) {
-                revert AddressEmptyCode(target);
-            }
-            return returndata;
-        }
-    }
-
-    /**
-     * @dev Tool to verify that a low level call was successful, and reverts if it wasn't, either by bubbling the
-     * revert reason or with a default {Errors.FailedCall} error.
-     */
-    function verifyCallResult(bool success, bytes memory returndata) internal pure returns (bytes memory) {
-        if (!success) {
-            _revert(returndata);
-        } else {
-            return returndata;
-        }
-    }
-
-    /**
-     * @dev Reverts with returndata if present. Otherwise reverts with {Errors.FailedCall}.
-     */
-    function _revert(bytes memory returndata) private pure {
-        // Look for revert reason and bubble it up if present
-        if (returndata.length > 0) {
-            // The easiest way to bubble the revert reason is using memory via assembly
-            assembly ("memory-safe") {
-                let returndata_size := mload(returndata)
-                revert(add(32, returndata), returndata_size)
-            }
-        } else {
-            revert Errors.FailedCall();
-        }
-    }
-}
diff --git a/examples/solidity-contracts/contracts/utils/Errors.sol b/examples/solidity-contracts/contracts/utils/Errors.sol
deleted file mode 100644
index 442fc1892..000000000
--- a/examples/solidity-contracts/contracts/utils/Errors.sol
+++ /dev/null
@@ -1,34 +0,0 @@
-// SPDX-License-Identifier: MIT
-// OpenZeppelin Contracts (last updated v5.1.0) (utils/Errors.sol)
-
-pragma solidity ^0.8.20;
-
-/**
- * @dev Collection of common custom errors used in multiple contracts
- *
- * IMPORTANT: Backwards compatibility is not guaranteed in future versions of the library.
- * It is recommended to avoid relying on the error API for critical functionality.
- *
- * _Available since v5.1._
- */
-library Errors {
-    /**
-     * @dev The ETH balance of the account is not enough to perform the operation.
-     */
-    error InsufficientBalance(uint256 balance, uint256 needed);
-
-    /**
-     * @dev A call to an address target failed. The target may have reverted.
-     */
-    error FailedCall();
-
-    /**
-     * @dev The deployment failed.
-     */
-    error FailedDeployment();
-
-    /**
-     * @dev A necessary precompile is missing.
-     */
-    error MissingPrecompile(address);
-}
diff --git a/examples/solidity-contracts/contracts/utils/introspection/ERC165.sol b/examples/solidity-contracts/contracts/utils/introspection/ERC165.sol
deleted file mode 100644
index 9fbce0447..000000000
--- a/examples/solidity-contracts/contracts/utils/introspection/ERC165.sol
+++ /dev/null
@@ -1,27 +0,0 @@
-// SPDX-License-Identifier: MIT
-// OpenZeppelin Contracts (last updated v5.1.0) (utils/introspection/ERC165.sol)
-
-pragma solidity ^0.8.20;
-
-import {IERC165} from "./IERC165.sol";
-
-/**
- * @dev Implementation of the {IERC165} interface.
- *
- * Contracts that want to implement ERC-165 should inherit from this contract and override {supportsInterface} to check
- * for the additional interface id that will be supported. For example:
- *
- * ```solidity
- * function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
- *     return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);
- * }
- * ```
- */
-abstract contract ERC165 is IERC165 {
-    /**
-     * @dev See {IERC165-supportsInterface}.
-     */
-    function supportsInterface(bytes4 interfaceId) public view virtual returns (bool) {
-        return interfaceId == type(IERC165).interfaceId;
-    }
-}
diff --git a/examples/solidity-contracts/contracts/utils/introspection/IERC165.sol b/examples/solidity-contracts/contracts/utils/introspection/IERC165.sol
deleted file mode 100644
index 719ec3586..000000000
--- a/examples/solidity-contracts/contracts/utils/introspection/IERC165.sol
+++ /dev/null
@@ -1,25 +0,0 @@
-// SPDX-License-Identifier: MIT
-// OpenZeppelin Contracts (last updated v5.1.0) (utils/introspection/IERC165.sol)
-
-pragma solidity ^0.8.20;
-
-/**
- * @dev Interface of the ERC-165 standard, as defined in the
- * https://eips.ethereum.org/EIPS/eip-165[ERC].
- *
- * Implementers can declare support of contract interfaces, which can then be
- * queried by others ({ERC165Checker}).
- *
- * For an implementation, see {ERC165}.
- */
-interface IERC165 {
-    /**
-     * @dev Returns true if this contract implements the interface defined by
-     * `interfaceId`. See the corresponding
-     * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[ERC section]
-     * to learn more about how these ids are created.
-     *
-     * This function call must use less than 30 000 gas.
-     */
-    function supportsInterface(bytes4 interfaceId) external view returns (bool);
-}